Vol. 36 No. 6 (2019): Diciembre
Clinical Microbiology

Malassezia species causative of pityriasis versicolor in Paraguay

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  • Norma Jovita Fariña González,
  • romina acosta,
  • Margarita Samudio,
  • arnaldo Aldama,
  • Lourdes Bolla,
  • Ladis Figueredo,
  • gustavo Giusiano
Norma Jovita Fariña González
Instituto de Investigaciones en Ciencias de la Salud
romina acosta
Hospital Nacional de Itauguá, Paraguay.
Margarita Samudio
Instituto de Investigaciones en Ciencias de la Salud. Asunción
arnaldo Aldama
Hospital Nacional de Itauguá Hospital de Clínicas Asunción
Lourdes Bolla
Hospital de Clínicas Asunción
Ladis Figueredo
Laboratorio San Roque. Asunción
gustavo Giusiano
Instituto de Medicina Regional, CONICET, Universidad Nacional del Nordeste,

Published 2020-01-18

Keywords

How to Cite

1.
Fariña González NJ, acosta romina, Samudio M, Aldama arnaldo, Bolla L, Figueredo L, Giusiano gustavo. Malassezia species causative of pityriasis versicolor in Paraguay. Rev. Chilena. Infectol. [Internet]. 2020 Jan. 18 [cited 2026 May 14];36(6). Available from: https://revinf.cl/index.php/revinf/article/view/446

Copyright (c) 2020 Norma Jovita Fariña González, romina acosta, Margarita Samudio, arnaldo Aldama, Lourdes Bolla, Ladis Figueredo, gustavo Giusiano

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Introduction: Pityriasis versicolor is a frequent pathology in Paraguay; however, its epidemiology is unknown. 

Objective: To determine the frequency of Malassezia species the cause of pityriasis versicolor and the epidemiological characteristics of the population. 

Materials and methods: Samples from patients with a presumptive diagnosis of pityriasis versicolor were collected. Laboratory diagnosis was carried out by fresh examination and culture in  modified Dixon agar and chromogenic Chromagar Malassezia®, incubated at 32 ° C, and identification by macro and micromorphological features, biochemical and physiological tests.  

Results: 102 patients were included(51% female) from 1 month to 63 years of age, and  the predominant age group was 11-20 years (35.3%). The most frequent location was on the back (60.8%). Hipocromic clinical forms (48%) predominated.  The most frequent species was M. globosa (52.9%), followed by M. furfur (24.5%), M. sympodialis (18.6%) and M. slooffiae (6.9%). 

Conclusions: The observed epidemiology is similar to other South American studies, with  no sex distinction,  predominantly  hypochromic clinical form and as primary responsible species appears M. globosa. This is the first report on species causing pityriasis versicolor in Paraguay and the characteristics of the affected population.

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